CN220778374U

CN220778374U - Tissue sampler

Info

Publication number: CN220778374U
Application number: CN202320815895.9U
Authority: CN
Inventors: 尹诚
Original assignee: SECOND PEOPLE'S HOSPITAL OF DEYANG CITY
Current assignee: SECOND PEOPLE'S HOSPITAL OF DEYANG CITY
Priority date: 2023-04-13
Filing date: 2023-04-13
Publication date: 2024-04-16
Anticipated expiration: 2033-04-13

Abstract

The utility model discloses a tissue sampler, in particular relates to the technical field of medical appliances, and solves the technical problem that the efficiency and success rate of sampling are affected due to the fact that the edge of a tissue sample collected in a plane groove of an existing biopsy needle, cut by an outer needle head, is irregular. The utility model comprises a tubular outer needle, wherein one end of the outer needle is provided with a first needle point, an inner needle is sleeved in the outer needle, one end of the inner needle, which is close to the first needle point, is provided with a second needle point, the side wall of the inner needle is provided with a sampling groove, and the sampling groove is arranged at one end, which is close to the second needle point; arc-shaped cutting pieces are symmetrically arranged on two sides of the sampling groove. Its aim at is through this device, and the sample is the halfcylinder under the cutting effect of arc cutting piece, and the shape is more regular, and the both sides edge of sample is smoother, reduces to scratch the sample tissue of rolling into between outer needle inner wall and the interior needle, has improved sampling efficiency and success rate.

Description

Tissue sampler

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a tissue sampler.

Background

The biopsy needle is a medical instrument for sampling and sucking cells from living tissues of cone tumors, unknown tumors and the like of various organs such as kidneys, livers, lungs, breasts, thyroid glands, prostates, pancreas, testes, uterus, ovaries, body surfaces and the like. Biopsy needles are classified into two types, aspiration needles and cutting needles. The aspiration needle is used for sucking single cells by negative pressure to perform cytological diagnosis, the cutting needle is used for acquiring tissues by using relative movement (such as rotation and feeding) of the outer needle and the inner needle, the biopsy needle generally comprises the outer needle and the inner needle which is arranged in the outer needle in a sliding way, the outer needle can establish an interventional channel in a body, and the far end of the inner needle is of an open structure and is used for accommodating the sampled tissues.

After the inner needle enters the target tissue, part of the target tissue enters the plane groove, and then the outer needle and the inner needle are made to move relatively, so that the needle head of the outer needle cuts part of the target tissue in the plane groove and the tissue of the human body, and the inner needle is retracted into the outer needle, and sampling is achieved. However, because the inner needle sampling groove of the existing biopsy needle is a plane groove with a semi-open structure, the edge of the tissue sample collected in the plane groove, which is cut by the needle head of the outer needle, is irregular, so that the tissue can be easily scratched and rubbed between the inner wall of the outer needle and the inner needle when the sampling is withdrawn, resistance is formed, and the sampling efficiency and success rate are affected.

Disclosure of Invention

The utility model provides a tissue sampler for solving the technical problems.

The technical scheme adopted by the utility model is as follows:

the tissue sampler comprises a cylindrical outer needle, wherein one end of the outer needle is provided with a first needle point, an inner needle is sleeved in the outer needle, one end of the inner needle, which is close to the first needle point, is provided with a second needle point, the side wall of the inner needle is provided with a sampling groove, and the sampling groove is arranged at one end, which is close to the second needle point; arc-shaped cutting pieces are symmetrically arranged on two sides of the sampling groove.

According to the technical scheme, the outer needle is firstly used for puncturing the skin of a patient by using the existing transmitting device, then the outer needle and the inner needle are enabled to reach target tissues at the same time, then the outer needle is kept different, the inner needle is ejected from the port of the outer needle into the target tissues by operating the transmitting device, at the moment, part of the target tissues enter the sampling groove, the inner needle is kept motionless, then the transmitting device is operated to enable the outer needle to continue to go deep, at the moment, the arc-shaped cutting sheets positioned at the two sides of the sampling groove can be matched with the first needle point to cut part of the target tissues in the sampling groove and the tissues of a human body, and when the inner needle is completely retracted into the outer needle, the sample tissues are completely separated from the tissues of the human body, and then the outer needle and the inner needle are simultaneously retracted by operating the transmitting device, so that sampling is completed. Through this device, the sample is the halfcylinder under the cutting action of arc cutting piece, and the shape is more regular, and the both sides edge of sample is smoother, reduces to cut and scratch the sample tissue of rolling into between outer needle inner wall and the interior needle, withdraws from in the biopsy needle more easily after the operation sample, has improved sampling efficiency and success rate.

Preferably, the leading edge of the arc-shaped cutting blade is arranged on the side far away from the second needle point.

By adopting the scheme, when the inner needle is kept still and then the transmitting device is operated to enable the outer needle to continue to be deep, the arc-shaped cutting piece is used for cutting the sample tissue.

Preferably, the arc-shaped cutting piece is connected with one end of the sampling groove close to the second needle head.

By adopting the scheme, the arc-shaped cutting piece can cut the sample tissue in the sampling groove to the maximum extent.

Preferably, a guiding groove is further formed in the side wall of the inner needle, one end of the guiding groove is connected with the tangential plane of the second needle point, and the other end of the guiding groove is connected with the sampling groove.

By adopting the scheme, in the process of operating the transmitting device to eject the inner needle from the outer needle port to enter the target tissue, the guide groove can guide the target tissue to enter the sampling groove, so that the sampling efficiency of the sampling groove is improved.

Preferably, the guide groove is obliquely arranged, and one end of the guide groove connected with the second needle point is arranged at the intersection position of the tangential plane of the second needle point and the outer side wall of the inner needle.

By adopting the scheme, when the inner needle is kept still and then the launching device is operated to enable the outer needle to continue to be deep, the first needle point can cut off the sample tissue remained in the guide groove together, so that the sample tissue in the guide groove and the human body tissue are completely cut off.

Preferably, the second needle tip is a multi-section needle tip.

By adopting the scheme, the resistance of the inner needle when entering the target tissue is smaller, and the tissue is easy to puncture.

Preferably, the outer surface of the outer needle is provided with a developing layer arranged on the outer surface.

By adopting the scheme, the developing effect of the device is enhanced, and the operator can judge the puncture distance conveniently.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:

1. through this device, the sample is the halfcylinder under the cutting action of arc cutting piece, and the shape is more regular, and the both sides edge of sample is smoother, reduces to cut and scratch the sample tissue of rolling into between outer needle inner wall and the interior needle, withdraws from in the biopsy needle more easily after the operation sample, has improved sampling efficiency and success rate.

2. In the process of operating the transmitting device to eject the inner needle from the outer needle port into the target tissue, the guiding groove can guide the target tissue into the sampling groove, so that the sampling efficiency of the sampling groove is improved.

3. The first needle tip can cut the sample tissue remained in the guide groove together, so that the sample tissue in the guide groove is cut off from the human body tissue.

4. The second needle point adopts a multi-section needle point, so that the resistance of the inner needle when entering the target tissue is smaller, and the tissue is easy to puncture.

5. The outer surface of the inner needle is provided with a developing layer which is used for enhancing the developing effect of the device and facilitating the judgment of the puncture distance by the operator.

Drawings

The utility model will now be described by way of example and with reference to the accompanying drawings in which:

FIG. 1 is a schematic diagram illustrating an internal structure of a tissue sampler according to the present utility model;

FIG. 2 is a top view of a tissue sampler according to the present utility model;

fig. 3 is a front view of a tissue sampler in accordance with the present utility model.

Reference numerals

1-outer needle, 2-first needle point, 3-inner needle, 4-second needle point, 5-sampling groove, 6-arc cutting piece, 7-sharpening, 8-guiding groove, 9-section, 10-developing layer.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.

In the description of the embodiments of the present application, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use of the inventive product, are merely for convenience of description and simplicity of description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

The present utility model will be described in detail with reference to fig. 1 to 3.

Examples:

in this embodiment, as shown in fig. 1 to 3, the tissue sampler comprises a tubular outer needle 1, wherein one end of the outer needle 1 is provided with a first needle point 2, an inner needle 3 is sleeved in the outer needle 1, a second needle point 4 is arranged at one end of the inner needle 3 close to the first needle point 2, a sampling groove 5 is arranged on the side wall of the inner needle 3, and the sampling groove 5 is arranged at one end close to the second needle point 4; arc-shaped cutting pieces 6 are symmetrically arranged on two sides of the sampling groove 5.

In specific use, the outer needle 1 is firstly used for puncturing the skin of a patient, then the outer needle 1 and the inner needle 3 reach target tissues at the same time, then the outer needle 1 is kept different, the inner needle 3 is shot out from the port of the outer needle 1 into the target tissues by operating the transmitting device, at the moment, part of the target tissues enter the sampling groove 5, then the inner needle 3 is retracted by operating the transmitting device, at the moment, the arc-shaped cutting sheets 6 positioned at two sides of the sampling groove 5 are matched with the first needle point 2 to cut part of the target tissues in the sampling groove 5 from the tissues of a human body, and when the inner needle 3 is completely retracted into the outer needle 1, namely, the sample tissues are completely separated from the tissues of the human body, and then the outer needle 1 and the inner needle 3 are simultaneously retracted by operating the transmitting device, so that sampling is completed. Through this device, the sample is the halfcylinder under the cutting action of arc cutting piece 6, and the shape is more regular, and the both sides edge of sample is smoother, reduces to cut and scratch the sample tissue of rolling into between outer needle 1 inner wall and the inner needle 3, withdraws from in the biopsy needle more easily after the operation sample, has improved sampling efficiency and success rate.

It should be noted that, the emitting device and the excitation process thereof, and the connection manner of the emitting device and the emitting device are all in the prior art, and are not described in detail.

In this embodiment, as shown in fig. 1 to 3, the edge 7 of the arc-shaped cutting blade 6 is disposed on the side away from the second needle tip 4.

In particular use, the arcuate cutting blade 6 is adapted to cut sample tissue when the firing means is operated such that the inner needle 3 is retracted.

In this embodiment, as shown in fig. 1 to 3, the arc-shaped cutting blade 6 is integrally connected to one end of the sampling slot 5 near the second needle.

In particular use, the arcuate cutting blade 6 is enabled to cut the sample tissue into the sampling slot 5 to a maximum extent.

In this embodiment, as shown in fig. 1 to 3, a guiding groove 8 is further provided on the side wall of the inner needle 3, one end of the guiding groove 8 is connected to the tangential surface 9 of the second needle tip 4, and the other end of the guiding groove 8 is connected to the sampling groove 5.

When the device is specifically used, in the process of operating the transmitting device to eject the inner needle 3 from the port of the outer needle 1 into the target tissue, the guide groove 8 can guide the target tissue into the sampling groove 5, so that the sampling efficiency of the sampling groove 5 is improved.

In this embodiment, as shown in fig. 1 to 3, the guide groove 8 is provided obliquely, and an end of the guide groove 8 contacting the second needle tip 4 is provided at an intersection position of the cut surface 9 of the second needle tip 4 and the outer side wall of the inner needle 3.

In particular use, when the launching device is operated to retract the inner needle 3, the first needle tip 2 can also cut off the sample tissue remaining in the guide groove 8, so that the sample tissue in the guide groove 8 is completely cut off from the human tissue.

In this embodiment, as shown in fig. 1 to 3, the second needle tip 4 is a three-section 9 needle tip.

When the needle is specifically used, the resistance of the inner needle 3 entering the target tissue is smaller, and the tissue is easy to puncture.

In this embodiment, as shown in fig. 1 to 3, the outer surface of the outer needle 1 is provided with a developing layer 10 arranged thereon.

When the device is specifically used, the development effect of the device is enhanced, and the operator can conveniently judge the puncture distance.

In other embodiments, the second needle tip 4 is a blunt tip, which reduces bleeding and bruising.

It is worth mentioning that the device is disposable.

The foregoing examples merely represent specific embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present application, which fall within the protection scope of the present application.

Claims

1. A tissue sampler, characterized in that: the needle comprises a cylindrical outer needle (1), wherein a first needle point (2) is arranged at one end of the outer needle (1), an inner needle (3) is sleeved in the outer needle (1), a second needle point (4) is arranged at one end, close to the first needle point (2), of the inner needle (3), a sampling groove (5) is formed in the side wall of the inner needle (3), and the sampling groove (5) is arranged at one end, close to the second needle point (4); arc-shaped cutting pieces (6) are symmetrically arranged on two sides of the sampling groove (5).

2. A tissue sampler according to claim 1 wherein: the edge (7) of the arc-shaped cutting piece (6) is arranged on one side far away from the second needle point (4).

3. A tissue sampler according to claim 1 wherein: the arc-shaped cutting piece (6) is connected with one end of the sampling groove (5) close to the second needle point (4).

4. A tissue sampler according to claim 2 wherein: the side wall of the inner needle (3) is also provided with a guide groove (8), one end of the guide groove (8) is connected with a tangential plane (9) of the second needle point (4), and the other end of the guide groove (8) is connected with the sampling groove (5).

5. The tissue sampler of claim 4 wherein: the guide groove (8) is obliquely arranged, and one end, connected with the second needle point (4), of the guide groove (8) is arranged at the intersection position of the tangential surface (9) of the second needle point (4) and the outer side wall of the inner needle (3).

6. The tissue sampler according to any one of claims 1-4, wherein: the second needle point (4) adopts a multi-section needle point.

7. The tissue sampler according to any one of claims 1-4, wherein: the outer surface of the outer needle (1) is provided with a display layer (10) which is arranged on the outer surface.